Practice Activation Energy (4) - Energy Changes in Reactions - IB 10 Sciences (Group 4)

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8 questions

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6 sample questions

Question 1.
What is activation energy?
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Think about what energy is needed to start a fire.
Question 2.
Name one example of a catalyst.
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Consider biological processes.
3Question 3.
What does activation energy refer to?
- The energy of reaction products
- The minimum energy required to initiate a reaction
- The energy released in exothermic reactions
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Focus on what is needed to start a reaction.
4Question 4.
True or False: Catalysts are consumed in the reactions they speed up.
- True
- False
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Remember what happens to catalysts in a reaction.
Question 5.
A certain reaction has an activation energy of 50 kJ/mol. Discuss the implications of this value in terms of temperature increase and reaction rate.
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Apply the Arrhenius equation concept.
Question 6.
Analyze the impact of introducing a catalyst that lowers activation energy to 20 kJ/mol in a biochemical reaction.
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Consider how reaction kinetics change with lower energy barriers.

4 more questions in this section. Enroll free to practise them all.